Question:
Nif genes occur in
Nif genes occur in
Updated On: Aug 15, 2022
- Rhizobium
- Aspergillus
- Penci/lium
- Streptococcus
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The Correct Option is A
Solution and Explanation
Nif genes (Nitrogen fixing gene) are present in the soil bacterium Rhizobium which symbiotically fixes atmospheric nitrogen in the roots of leguminous plants.
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Concepts Used:
Microbes in Human Welfare
There are several valuable microorganisms that are beneficial to humans in various manners such as:
In Household Products
- Fermentation of milk to produce yogurt.
- Milk cuddling to compose curd, cheese, and paneer.
In Industrial Products
- Production of beverages such as wine, beer, whiskey, brandy, or rum.
- Production of antibiotics such as Penicillin and other chemical substances to kill or retard the expansion of disease-causing microbes.
Fermented Beverages
- A fermentor is used to produce microbes on a large scale for industrial purposes.
- The brewer’s yeast (Saccharomyces cerevisiae) is used to make ethanol. At this time, the yeast ferments malted cereals and fruit juices.
Antibiotics
- The term antibiotic means “against life”. These materials can kill or destroy the growth of other microbes.